Question 160235
._____._________._____.
A     B         C     D

Statements             Reasons
AC=BD                    GIVEN
AC=AB+BC                  Def. of Betweenness
BD= BC+CD                 Def. of Betweenness
AB+BC=BC+CD                SUBSTITUTION PROPERTY
BC=BC                     REFLEXIVE PROPERTY
AB=CD                     TRANSITIVE PROPERTY